Thermal Effects in Dislocation Theory II: Shear Banding and Yielding Transitions

J. S. Langer

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arXiv · 1612.00392

Thermal Effects in Dislocation Theory II: Shear Banding and Yielding Transitions

J. S. Langer

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Abstract

The thermodynamic dislocation theory presented in preceding papers is used here to describe shear-banding instabilities. Central ingredients of the theory are a thermodynamically defined effective configurational temperature, and a formula for the plastic deformation rate determined by thermally activated depinning of entangled dislocations. An important feature of this paper is an interpretation of yielding transitions in polycrystalline solids.

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J. S. Langer. 2016-12-01. Thermal Effects in Dislocation Theory II: Shear Banding and Yielding Transitions. https://arxiv.org/abs/1612.00392

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